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Journal ArticleDOI

Harmonic generation by resistive feedback from superconducting point contacts

R. Adde, +1 more
- 01 May 1972 - 
- Vol. 43, Iss: 5, pp 2405-2406
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TLDR
In this article, the rf emission from a superconducting point contact driven with a constant current source allows the direct observation of harmonic generation by purely resistive feedback, and the amplitudes of the harmonics are shown to be in agreement with the theoretical values determined from a simple model of the junction.
Abstract: 
The rf emission from a superconducting point contact driven with a constant current source allows the direct observation of harmonic generation by purely resistive feedback. The amplitudes of the harmonics are shown to be in agreement with the theoretical values determined from a simple model of the junction.

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Citations
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Journal ArticleDOI

Low energy, high current density ion implantation of materials at elevated temperatures for tribological applications

R. Wei
- 01 Sep 1996 - 
TL;DR: In this paper, the authors compared the performance of low energy, high current density and high energy ion implantation on austenitic stainless steel and tool steel materials and concluded that the ion energy is of secondary importance, as long as it is sufficiently high to overcome certain surface barrier potentials, to prevent surface oxidation and to allow the build-up of a high concentration of atomic nitrogen on the top of the treated surface.
Journal ArticleDOI

S-c-S junctions as nonlinear elements of microwave receiving devices

A. N. Vystavkin, +5 more
TL;DR: In this paper, the S-c-S junction is defined as a structure in which weak link of two superconducting electrodes is created in the form of short circuit section of the same superconductor as electrodes with effective dimension A less than coherence length 03BE.
Journal ArticleDOI

Josephson frequency conversion in the range 145–1600 GHz with Nb–Nb superconducting point contacts used as oscillator‐mixer

G. Vernet, +1 more
- 01 Jun 1974 - 
TL;DR: In this paper, the frequency conversion in the millimeter and submillimeter wave region is studied with superconducting Nb-Nb point contact junctions at 4.2 °K, using the contact both as the local oscillator and the mixer with intermediate frequencies of 0.1, 0.3 and 9.2 GHz.
Journal ArticleDOI

Microwave generation and complex microwave responsivity measurements on small Dayem bridges

Niels Falsig Pedersen, +6 more
- 01 Jan 1977 - 
TL;DR: In this paper, the authors measured the active properties of a micro-bridge at X-band frequencies and found that the large self inductance of the background film adjacent to the bridge played a major role in explaining the results.
References
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Journal ArticleDOI

Effect of ac Impedance on dc Voltage‐Current Characteristics of Superconductor Weak‐Link Junctions

D. E. McCumber
- 01 Jun 1968 - 
TL;DR: In this paper, the effect of the Josephson pair current in a weak-link superconductor junction is considered and two special cases which illustrate the basic principles involved are worked out.
Journal ArticleDOI

Current‐voltage characteristics of josephson junctions

W. C. Stewart
- 15 Apr 1968 - 
TL;DR: In this paper, a model for superconducting Josephson junctions analogous to the driven simple pendulum with damping gives dc I•V curves displaying hysteresis for light damping.
Journal ArticleDOI

Microwave emission from superconducting point‐contacts

A. H. Dayem, +1 more
- 01 Jul 1966 - 
Journal ArticleDOI

Generation of Harmonics and Subharmonics of the Josephson Oscillation

Donald Sullivan, +3 more
- 01 Nov 1970 - 
TL;DR: In this paper, the observation of harmonics and subharmonics of the Josephson oscillation is shown to be in agreement with a rather simple model of the junction, which provides an explanation of induced steps in the currentvoltage characteristic which occur at submultiples of the usual induced step voltages.
Journal ArticleDOI

Coherent radiation from voltage‐biased weakly connected superconductors

J. E. Zimmerman, +2 more
- 15 Nov 1966 - 
TL;DR: In this paper, the authors reported the generation of coherent radiation with voltage-biased superconducting point contacts at both 30 MHz and 10 KMHz, and the frequency stability of emitted radiation was limited by the stability of the bias supply and was measured to be 10−5 at 30 MHz.